landsiedel



3 SHEETS-SHEET l.

HARRY LANDSIEDEL,

Feb. 6, 1923. 1,444,126.

H. LANDSIEDEL.

ADDING MACHINE.

men 1uLY12, 1920. a SHEETS-SHEET 2.

`//v VENTO/a HAR/w ANUS/FUEL,

Feb. 6, 1923. 1,444,126. H. LANDSIEDEL.

ADDING MACHINE.

r1LD:uLYx2.19zo. a SHEETS-sucer 3.

IN VE N TUI?.

HARRY LANDS/EDEL,

IS A T7' RNEYS.

Patented Feb. 6, 1923.

UNITED STATES PATENT OFFICE.

HARRY LANDSIEDEL, OF NOBWOOD, OHIO, ASSIGNOR TO THE DALTON ADDING MACHINE COMPANY, 0F CINCINNATI, OHIO, A'. CORPORATION 0F OHIO.

ADDING MACHINE.

Applicationjled July 12, 1920. Serial No.'395,769.

To (zZ/ 'U5/wm 'it may concern:

Bc it known that I, HARRY LANDSIEDEL, :i citizen of the United States. residing at Norwood. Hamilton County, and State of (lhio` have invented a new and useful Adding; Machine, of which the following is a specification.

'this invention relates to adding machines` The present invention has special reference to adding machines having differential mechanism in which numbers are set uprbyoperation of numeral keys provided for that purpose. Sometimes in the operation of adding machines the user. through inadvertence. accident or mistake, strikes the wrong key with the result that the Wrong number is set up in the differential mechanism; For

the correction of such errors adding 'ina= chines have been provided with mechanism for clearing the differential mechanism without the necessity of operating the adding! mechanism7 thus correcting the erroraiid permitting the user to set up the right num ber in the differential mechanism without entering into the adding mechanism the wrong number which had been set up.4

Adding machines have also been provided with motors which may be'controlled by the user of the machine to perform the .workof operating the machine and the various mechanisms thereof to cause the machine to perform the desired calculations'as the num-' hers are set up in the d ifferentialffmechanism.

The present invention has special ref-erg ence to mechanism operable by the motor to' clear the differential mechanism in case error is made bythe user in setting up a number in the differential mechanism.

An object of the present invention is to provide au adding machine with equipment to utilize` the power of the motor to clear the differential mechanism of error Without disturbingr the adding n'iechanism of the means Vis capable of short and facile operation and which in fact operates `with the light and responsive operation characterizing the operation of the numeral keys of the machine.

Other objects will appear from the following description# in which reference is made to the drawing illustrating-a preferredembodiment of the invent-ion in connection with the Dalton adding machine, and: in which- F ig. l is a longitudinal sectional view of such-machine' showing features of the'present-invention.. E j

Fig. 2 is a view showing a plan of the differential mechanism and thelmeans controlling' the step by stepmoveinent thereof,

and also. the means for effecting a returnV of the differential mechanism to itsvstartingpint by operationof connections ac tuated bythe motor.

Fig. 3 saidetail'ed side elevation of parts under control` bf'the motor foi"` clearing the differential mechanism.' l L Fig; 4'is a frontv view of the'same parts shown in Fig. 3..-

The' Daltoi'r adding machine linwhich the present invention is shown comprises 4differential mechanism including a laterally movable carriage 1 which is connected up with rarock'Shafer-2 by neansiofanarm 3 attached to 'the rokfshaft 'and a' link @from theari-n .'to'siidcarriage., bratchet seg' ment 5 is n'coiine'ction with an 'arm 6 that is secured't'o the rock shaft."- rEsca'pementl devices 7-'c0'ntrolfthe'step by step movement of' the `segment -'5,' thereby controlling the' step by stepsinvemento thejearriagei as the Same'fslmovedmm order" to order responsive' toftl'fe -operation `ofwthe 'numeral' keys 8 in the'usual manner The'differential stops 9 inthe carriage' l are set upby operation of the numeral keys as'usual. 'y

-The Dalton adding machine 'comprises uninipulativ mechanism for re`storing the differential mechanism to itsfstarting point to'clear the same in case/error vis made in striking the keys. Said manipulative mechanism comprises a key device'll() pivotally supported upona shaft 11 and sustained in its normal position by a spring 12. A sleeve 13 is supported for rocking or turning movements on the shaft 11. Anl arm 14 is attached to the sleeve and extends under the arm of the key device l0 so that when said lrey device is depressed the sleeve 13 will he fnrned on the shaft 1l. An arm l5 is also attached to the sleeve 13, having its rcar cud connected, hy a link lf3, with one arm of :iy bell crank lever 17. The lever 17 Is operatively carried by a support 18 and the other arin of said lever extends downwardly :ind is provided with a laterally extended portion 19.

The arm (5 of the differential escapement segment carries a roll 2() in the line of movement of the extension 19; so that, if the differential mechanism be out of its idle position and the manipulative correction device be operated, the extension 19 will contact with the roll 2O and thereby actuate the shaft 2 and cause theidifferential mechanism to be restored to its starting or idle position. lVhen the key -device 10 is released the spring 12 restores it to its normal position in which a projection 21 on said key device abuts against a shaft 22. The sleeve 13 and the connections therefrom may be restored to their starting positions by an appropriate spring 22a.

The manipulative connections for correcting error in the differential mechanism as above described are familiar and therefore require no further description, and I now proceed to describe the present invention for utilizing the power of the motor to clear the differential .mechanism of error.

The usual electric motor 23 for controlling the operation of the machine is shown. In the present instance it is unnecessaryto enter into or consider the construction, arrangement or mode of operation of the equipment and mechanism by whichthe user of the machine controls the opera-tions of the motor. It is sufficient to mention thel familiar fact that the motor is of the continuous running type and does not cease to operate except when the machine is left idle for apredetermined length ofntime. It is known that, in practice, the motor continues to run for a desired period afteryany operation of the machine thereby; and it has been found desirable to permit running of the Vmotor for about three minutes, more or less, after any operation of the machine thereby, before the motor will stop automatically. However, the period ofv time during which the motor will continue to operate, or whether the motor stops automatically or not, are unimportant in a consideration of in v present invention.

As shown, the armature shaft 24 of the motor is arranged to drive a gear 25. A cam 26 is driven by the gear 25. An arm 2T is attached to :1 -*shaft 28 and supports an anti-friction roll 29 which rides against thc cam 2b'. An arm A30 attached to the shaft 28 had its end pivoted to a part 31 which is guided in its movements by a pin-and-slot device 32, and is actuated by a spring 3()A to press thc roll 29 against the cam 26.

A lever 51?', whirli if desiieil may hi :in integral part of the arm 141, is ill rigid con nectioii with the sleeve l which is on flic shaft 1l. An elastic link device comprisingr a part 34- pivotally connected with the lcvcr 33 which, by a` construction comprising pins 35 and slots 36 and supporting springs il?, yieldingly supports and guides :i incrnbcr 2%, iS provided. The lower cnil of the ineniher 38 is provided with a shoulder liti adapter! to be engaged by a finger in on the` part :l1 when the latter is moved downwardly. 'lhc elastic link device comprisiirur the parts 34-38 is movable as required to place the shoulder 39 in or out of position to be cngaged by the finger 40. Normally, said link device is in position in which the shoulder 39 will not be engaged by the finger 40 dniing the movements of said linger; but mechanism is provided under control of the user of the machine whereby the link device 34-'-38 will be operated to move the shoulder 39 in position to be engaged by the finger 40 as desired.

The lever 41 is pivoted upon a shaft 42. Said lever extends forwardly and is provided with a key buttonv 43, said parts preferably being arranged with the key button at one side of the keyboard of the machine. An arm entends'upwardly from the rear end ofthe lever 41 and supports an anti-friction roll-44 in contact with the forward edge of the elasic'link34-38. A springr 46 retains the lever 41 in a position to hold the elastic link 34-38 -in an adjustment in whichthc shoulder 39 is out of the path of movement o'f the finger 40, thus leaving the finger 40 free to move up and down without engaging the shoulder 39. When it is desired to utilize the power of the motor to clear the differential mechanism the lever 41 is depressed by using the key or button 43, thereby moving the ro'll'44 forwardly away from the elastic link 34--38 and permitting the spring 46 to move the link to position the shoulder 39 in the' path of movement of the finger 40; so that at the next operation of the cam 26 the finger 40 will engage the shoulder -39 and thereby operate the connections which restore the differential carriage 1 to its starting position in which thc differential mechanism is ready to receive or to have sct up therein any desired number.

lVhen the lever 31 is depressed it will be held in its depressed position until the clearing operation is completed. A latch device is provided for this purpose the same comprising a latch member 47 pivotally supported at 48 having a shoulder 49 arranged to engr-7e above a lu'g 50 on the lever 41 when said lever is depressed. A spring 51 actuates the latch toward latching position. An arm 52 on the latch 47 extends rearwardly into the path of movement of a pin 53 which is on the link device 34H38. About or bclore the time that the link device completes its downward movement, the pin 53 contacts with the arm 52 thereby operating the latch 47 to release the lever 41. This permits the spring to raise the lever 41 to actuate the link 34-38 to inoperative position when the finger 40 is released from the shoulder 39. Since the shoulder 39 is normally out of the line of movement of the finger 40 the latter is permitted to reciprocate in the normal op- @rations of the machine without disturbing the differential mechanism. Therefore, in the normal operations of the machine the dill'erential mechanism is cleared after each adding operation, except in cases of repeating, in the known manner.

From the foregoing it is clear that my invention etiiciently accomplishes all of its intended purposes. The racks 54 which are controlled in their movements by the stops 9 when the latter are in their set .positions are left unoperated when the `stops 9 are moved from their set positions by the operation of the motor. This prevents entering of the error number intouthe result. Thev mechanism is free from complications and the operation is easily and simply controlled. I do not restrict myself to unessential features, but what I claim andde'sire to secureI by LettersPatent, is

movable to and from set positions, mechanism controlled by said parts ,in `their set positions, a manipulative` device forV moving said parts from their set positions, while said mechanism remains unoperated, and mechanism operable by thev rnotor for moving said parts from their set positions while both said first-named mechanism and said manipulative device remain unoperated.

2. The combination with a motor, of parts movable to and from set positions, mecha-` nism controlled by said parts in their set positions, connections controlled by the motor permitting said mechanism to'operate, mechanisin operable by the motor for moving the said parts from their set positions while said first-named mechanism remains unoperated. a device for moving said parts trom their set positions independently of the motor, and manipulative means under control of the user of the machine determining when said motor may move said parts from their set positions as aforesaid.

il. The combination with a motor, of parts movable to and from set positions, mechanism controlled by said parts in their set positions, a manipulative device for movin;Y

, said parts from their set positions While said mechanism remains unoperatedmechanism operable by the motor for moving said parts from their set positions While said firstnamed mechanism, a set device re main unoperated, and means under con 1. The combination Witha motor, of

trol of the user of the machine determining when said motor may move said parts from their set positions as aforesaid.

4. The combination with a motor, of parts movable to and from set positions, mechanism controlled by said parts in their set positions, a manipulative device for moving said parts romtheir set positions while said mechanism remains unoperated, mechanism operable by the motor for moving said parts from their set positions while both said Erst-named mechanism and said manipulative device remain unoperated, and means under control of the user of the machine determining when said motor may move said parts from their set positions as aforesaid.

5. The combination with the differential mechanism of an adding machine movable to and from operative position, and parts whose operation is controlled by the diii'erential mechanism when the dii'erential mechanism is in its operative position, of a motor, manipulative connections for movin the differential mechanism from its operative position while said parts remain unoperated, and means for optionally operating said connections by the motor while said parts remain unoperated.

6. n an addin machine, the combination with differential stops settable to represent numbers, `mechanismfA operable under control o the sto S which are set to represent numbers, an manually operable connections for clearing the stops While said mechanismremains unoperated, of a motor, and a manipulative device normally preventing operation of said connections by said motor being movable to position to permit said connections to be operated by said motor, and means'for operating said connections by said motor after said manipulative device has been operated.

7. In an adding machine, the combination with differential mechanism settable in operative and inoperative positions, and parts whose operation is controlled by the differential mechanism when the differential mechanism is in its operative position, of connections for moving the differential mechanism to inoperative position while said parts arc left unoperated, manipulative means for operating said connections, a motor, and mechanism for causing said motor to operate said connections to move the differential mechanism to inoperative position.

S. ln an adding machine. thc combination with differential mechanism. means for changing the condition of the differential mechanism from a clear condition to a condition in which said differential mechanism represents a selected number, movable part-z whose extent of movement is limited by the differential mechanism when said mechanism is in a condition to represent a selected lil-f) number, and manipulative connections for restoring the differential mechanism. to :L

clear condition while said parts are left nnoperated, of a motor,A and means for utilizinethe power of said motor to restore the diilercntial mechanism toa clear condition while said parts are left unoperated. 9. In an adding machine, the combination with dilferential mechanism, nie-ins for changing the condition of the differential mechanism from a clear condition to a condition Vin which, said difierential .mechanism represents a. selected numlier,` movable parts whose extent of morement is limited hyrvthe dilferential mechanism when; said mechanism is ina. condition to represent a selected number., connecttons Afor restoringthe differential mechanism to a clear condition while said par-tsmre left unoperated,a.nd a manipulative device for operating :said connections, of a motor, andfoptional means for operatingsaid con-V nections b v said` .motor to restore thedifl'enential mechanism to a'clear, condition .while the saidpartsare left unoperated. 10Q-In an addn matching-thecnm ina-A tion vwith differential mechanism, rma z\..xns:f )rL changing, the condition ,of the didferential' mechanism froman ineffective toon efective condition, operativemeehansrn `oper- ,ation is controlled bjr the diiferentialimechanismzivhemthe latter. is 'inail eifective tion., connections olxiialile` tqfclin'g the condition and manual means for operating?, said connections of the d i'erential mecha-Z...` nism.. from effective condition to,t uneifective condition, of a motor, an actuatoncp'erated by 'the-motor," and" meansfor operatiiiig said" connections bysaid .ailztnatoix tqfplace; thedifferential 'mechanism in inelfective edition wvh'ilef said mechanism Y reinaiiijsf unfoperated.- f Y `11. 'In an addingmachine the combinaf tion with differential mehansin movable from effective to ineffective position; 'o 'f 'se/ lectivelglr operable means for `moving said mechanism fromeffectiveuto ineffective position comprising-a rocking-element, connections from said element for moving said mechanism from effective to ineffective posi-` tion, a manipulative device for operating' said element and thereby said connections to move said mechanism from effective to inelfectirc position, a motor for operating said clement and thereby said connections to more said mechanism from effective to ineffective position independently of said device.

12, In an addingr machine, the combination with recording mechanism and differential mechanism movable to and from position to control the recording mechanism, of a rockino element, connections from said element lor moving said-differential mechanism from position in which it will control said recording mechanism. manipuialiw vonnectons for operating said rocking,r cvnient from the position in which it will control the recording mechanism while the rccordingA mechanism remains stationary, a motor for operating said rocliinfr element, means for operating a part of said laslnamed connections vby said motor to more said differential mechanism from the position in which it will control the recording mechanism While the recording mechanism remains stationary, and a device controllingr the operation of said part of said connections by said motor.

13. n an adding machine, a laterally movable carriage, manipulative connections for moving said carriage in one direction, a link for operating said connections, a device for o erating said link, means for holding Asaid nkand said device normally disconnected and 'being movable to position to permit salidlinkand said device to become connected,anda motor for operating said device- ..Y

Infanfaldding machine, a carriage, conneconsQLfor, moving said carriage in one direotion,".a manipulative device for operating saidfconnections', ai' link for operating said connecions` "1ndependently of said manipulativehdeviefaniotor, an actuator for actnating,sa.i dlinlr andthereby said connectinis` to` movie-'said carriageand a device normally 'preventing o eration of said link by `said actuator, and iieing movable to pos itio'n to' said actuator to operate said 1,5'. In an'adding machine, a carriage, a device fomoving carriage'in opposite directions,r connections for actuating said devicel tolxnove said carriage in one direction, a link for operatingr said connections, a motor, an actu ator driven by the motor for-hp erating-said link, a lever normally holding ls aidlirilr and said actuator disconnecled leaving the actuator free to operate While the'flin'k remains unoperated, means for moving said lever to permit engagement otsaidzlink and said actuator, and means for moving said link to position to be engaged by said actuator when said leve:` is moved.

16. In an adding machine, a carriage, a device for moving said carriage in one direction, connections for operating:r said dcvice, a link for operating said connections, a motor, elements driven by said motor for operating said link, a lever holding said link disconnected from said elements leaving said elements free to operate while said link remains unoperated, means for moving said lever, alatch holding said lever in the position to which it is moved. and means for moving said 'link into position to be engaged by said elements when said lever is moved to the positionaforesaid 17. In an adding-machine, aj carriage, a device for moving said carriage in one direction, connections for operatingsaid device, a link for operating saidconnections, a motor, elements driven by said motorfor operating said link, a lever holdingsaid llnk disconnected from saidelements leavinggsaid elements free to operate While :link .remains unoperated, means for, mgving 'said lever, a latch holding said lever 111. theposition to which it is moved, means for moving said link into position to be engaged by said elements when said lever is moved to the position aforesaid, and means for releasing said latch from said lever as an incident to operation of said link by said elements.

18. In an adding machine, a carriage, a device for moving said carriage in one direction, connections for operating said device, a link for operating said connections, a motor, elements driven bv said motor for operating said link, a lever holding said link disconnected from said elements leavin said elements free to operate While said li remains unoperated, means for moving said lever, a latch holding said lever in the position to which it is moved, means for moving said link into position to be engaged by said elements when said lever is moved to the position aforesaid, means for releasing said latch from said lever as an incident to operation ot' said link by said elements. and means for operating said lever to move said link ont of position to be engaged by said elements when said lever is released from said latch.

19. In an adding machine, recording mechanism, a carriage for controllin the recording mechanism and being movab elfrom and to a starting position, connections for moving said carriage to its starting position from any position in which Said carriage may be located, a manipulative device for operating said connections to move said carriage at a single movement to its starting position from any position in which said carriage may be located While the recording mechanism remains unoperated and mechanism for operating said connections independentlyof said manipulative device to move said carriage to its starting point at a single operation from any position in which said carriage may be located While the recording mechanism remains unoperated.

20. In an adding machine, recording mechanism, a carriage for controlling the recording mechanism and being movable from and to a starting position, connections for moving said carriage to its starting position from any position in which said carriage may be located, a manipulative device for operating said connections to move said carriage at a single movement to its starting position from any position in which said carriage may beilocated While the recording mechanism, remains unoperated, mechanism for 4operating said connections independently ot said manipulative device to move said carriage to its, starting point at a single operation from any positionin which said carriage may be, located while the recording mechanism remains unoperated, and option- -ally operablemeans controlling the operation of said mechanism.

Q1.v In anadding machine, a carriage movA able from and to a-starting position, connections for moving said carriage to its starting position from any position in which said carriage may be located, a manipulative de- .vice for operating said connections to more Said carriage to its Starting position at a single operation from Whatever position said carriage may be located, a motor, elements operated by said motor for operating Said connections to move said carriage to its starting position, and a device for preventing or permitting said elements to operate said connections during the operation of the motor, as desired.

22. In an adding machine, a carriage movable from and to a starting position, con nections for moving said carriage to its starting position from any position in which said carriage may be located, a manipulative device for operating said connections to move said carriage to its starting position at a single operation from Whatever position said carriage may be located, a motor, ele-,

ments operated by said motor for operating said connections to move said carriage to its starting position, a device for preventing or permitting said elements to operate said connections during the operation of the' motor, as desired, means for moving said device to position to permit said elements to operate said connections, and a latch Jfor holding said device in said position.

23. In an adding machine, a carriage movable from and to a starting position, connections for moving said carriage to its starting position from any position in which said carriage may be located, a manipulative device for operating said connections to move said carriage to its starting position at a single operation from whatever position said carriage may be located, a motor, elements operated by said motor for operating said connections to move said carriage to its starting position, a device for preventing or permitting said elements lo operate said oonnectlons during the operation of the motor, as desired, means for moving said device toposition to permit said elements to operate said connections, a latch for holding said device in said position, and automati(` means for releasing said latch from said de vice as an incident to the operation of said connections by said elements.

Q4. In an adding inin'hine, a carriage movlljU able from and to a starting position, connections for moving said carriageto its starting position fromA any positionin which said carriage may be located, a manipulative de vice for operating said connections to move said carriage to its starting position at a single operation from Whatever position said carriage may be located, a motor, eleinents operated by said motor for operating sai'd connections to move said' carriage to its starting position, a device for preventing or permitting said elements to operate said connections during the operation of the motor, as desired, means for moving said device toposition to permit said elements to operate said connections, :i latch {or holding said device in said positionl automatic means for releasing said latch from said device :is an incident to operation of said connections by said elements7 and means for opciating said device to position to prevent opeiaiion of said connections by said elements.

HARRY LA NDSI EDEL. 

